BT Performance Test say about connection speed and IP Profile?
Download speedachieved during the test was - 5404 Kbps
For your connection, the acceptable range of speedsis 2000-7150 Kbps.
IP Profile for your line is - 6000 Kbps
it also says 7150 Kbps = Max Achievable Speed. Not sure BT are aware im on adsl2+!